UD 2.5 and Market fix dumb question

OK, I have a dumb question. I downloaded the fix for market, but how do I install it. I renamed it to update.zip and tried to use the install update.zip thing in the CWM. Didn't work, said error. Also How do I install things like the gingerbread keybaord, themes and crap like that. I am rooted, CWM, UD 2.5, did all that but can't figure out how to install these other things. Do I install them from ROM Manager or something. I only see install ROM as an option. Sorry for the newbe questions, but I have been reading threads all day to try and do this. Thanks!